[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Memory again
From: |
Stefan Monnier |
Subject: |
Re: Memory again |
Date: |
Wed, 07 Dec 2011 09:01:27 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.91 (gnu/linux) |
>> > You are, in fact, saying that fontifying a 60-MByte compilation buffer
>> > creates text properties and other supporting data structures that can
>> > accrue to a total of 2G bytes. I find this extremely hard to believe.
>> > A simple calculation will show that a file that has 1 million lines
>> > with 5 different faces (warning, line number, column number,
>> > underline, default) per line needs only a few million intervals -- how
>> > can this require 2G bytes of memory?
Because the property values are themselves non-trivial.
>> Start fresh Emacs instance, make sure you're in *scratch*. Type M-x
>> compilation-minor-mode, then eval (staying in *scratch*, of course):
>>
>> (let ((x 0)) (while (< x 1000000) (insert "test:1:oops\n") (setq x (1+ x))))
>>
>> Wait for completion, then see RSS. Next, kill *scratch*, M-x garbage-collect
>> and see RSS again.
> How is this different from compiling a C file with 1000000 #warning
> directives? What am I missing?
To test your buffer-reallocation theory, you could instead do
(insert (apply #'concat (make-list 1000000 "test:1:oops\n")))
Stefan
- Re: Memory again, (continued)
- Re: Memory again, Eli Zaretskii, 2011/12/06
- Re: Memory again, Carsten Mattner, 2011/12/06
- Re: Memory again, Dmitry Antipov, 2011/12/06
- Re: Memory again, Eli Zaretskii, 2011/12/06
- Re: Memory again, Stefan Monnier, 2011/12/06
- Re: Memory again, Eli Zaretskii, 2011/12/06
- Re: Memory again, Stefan Monnier, 2011/12/06
- Re: Memory again, Eli Zaretskii, 2011/12/07
- Re: Memory again, Dmitry Antipov, 2011/12/07
- Re: Memory again, Eli Zaretskii, 2011/12/07
- Re: Memory again,
Stefan Monnier <=
- Re: Memory again, Carsten Mattner, 2011/12/08
- Re: Memory again, Dmitry Antipov, 2011/12/08
- Re: Memory again, Carsten Mattner, 2011/12/09
- Re: Memory again, Eli Zaretskii, 2011/12/06
Re: Memory again, Óscar Fuentes, 2011/12/06
- Re: Memory again, Stefan Monnier, 2011/12/06
- Re: Memory again, Nix, 2011/12/11
- Re: Memory again, Tim Connors, 2011/12/14
- Re: Memory again, Eli Zaretskii, 2011/12/14
- Re: Memory again, Tim Connors, 2011/12/14